#define BF_ENCRYPT 1

#define BF_DECRYPT 0

#define BF_ROUNDS 16

#define BF_BLOCK 8
typedef struct bf_key_st {
  uint32_t P[BF_ROUNDS + 2];
  uint32_t S[4 * 256];
} BF_KEY;

OPENSSL_EXPORT void BF_set_key(BF_KEY *key, size_t len, const uint8_t *data);

OPENSSL_EXPORT void BF_encrypt(uint32_t *data, const BF_KEY *key);

OPENSSL_EXPORT void BF_decrypt(uint32_t *data, const BF_KEY *key);

OPENSSL_EXPORT void BF_ecb_encrypt(const uint8_t *in, uint8_t *out,
                                   const BF_KEY *key, int enc);

OPENSSL_EXPORT void BF_cbc_encrypt(const uint8_t *in, uint8_t *out,
                                   size_t length, const BF_KEY *schedule,
                                   uint8_t *ivec, int enc);